Sr. Microsoft System Administrator at The Bison Group LLC

Alexandria, Virginia, United States -

Full Time

Start Date

Immediate

Expiry Date

09 Jan, 26

Salary

0.0

Posted On

11 Oct, 25

Experience

10 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Server Administration, Windows Server, Active Directory, DNS, DHCP, PowerShell, Security Updates, System Performance, Trouble Ticket Management, COOP Planning, Documentation, Automation, Technical Support, System Upgrades, IIS Management, Team Leadership, Mentoring

Industry

Security and Investigations

Description

Description Bison Group – Mission First. People Always. At Bison Group LLC, we’re more than a defense contractor — we’re a people-focused small business with a strong culture built on trust, respect, and impact. We value every member of the team, foster open communication without the layers of a big corporation, and stand firmly behind our commitment to the veteran community through real, tangible action. When you join Bison Group, you’re not just filling a role — you’re stepping into a mission-critical environment where your work directly supports the Department of Defense, and national security objectives. Here, your skills are recognized, your growth is encouraged, and your contributions have a clear purpose. · Support the identification and resolution of automation and information technology hardware and software issues and problems to maintain at least a 99% system availability rate. · Perform administration and maintenance of Windows based servers to include daily system checks and record 100% of findings and statuses in DCD Systems Administration Daily Checks list. Currently, there are more than 40 daily systems checks, however, the contractor shall be responsible for maintaining, reporting, and updating the daily checklists. · Ensure all Microsoft Windows Server and applicable installed features/applications have the latest Defense Information Systems Agency (DISA) STIGs applied within 30 calendar days of release. Annotate findings and remediation steps within checklists and upload to STIG management portals where available. Notify the Government and TTM of any critical findings that cannot be remediated within 3 days of discovery. · Apply vendor security updates and hotfixes to address ACAS findings and organizational security mandates within 14 calendar days of notification of update availability. · Provide detailed system matrices of DCD supported systems and applications to include utilization, uptime, storage availability, and performance monthly or as requested. · Analyze technical support requests and provide possible technical solutions and courses of action within 10 business days of receipt of request. · Conduct testing of systems and applications immediately after configuration changes and software deployments to validate that changes and enhancements do not adversely affect system operation and performance. · Deploy DCD-developed, third-party commercial off-the-shelf (COTS), and Government off-the-shelf (GOTS) applications to production, integration, and staging servers within 2 business days of deployment request while adhering to organizational software deployment windows and Government direction. · Conduct system upgrades as directed by DCD leadership. The planning phase shall start within 15 business days of upgrade request and work shall be completed no later than 15 business days after the agreed completion date. · Ensure the availability and accessibility of approximately twenty (20) Microsoft Internet Information Services (IIS) for Windows Server websites hosted across five (5) networks. · Respond to customer requests and contact customers by the end of the business day to confirm requirement receipt and provide an approximate time of completion. · Provide Continuity of Operations (COOP) planning, evaluation, and execution of critical IT services bi-annually (twice per year) and update any required SOPs and instructions guides within five days of COOP exercise completion · Develop and maintain documentation which includes SOPs, TTPs, system architecture guides, and diagrams for all DCD systems and hardware configurations adhering to organizational templates and policies as required. · Notify the Government of any unscheduled system outages within 30 minutes of each occurrence and record the outage to the operations log within four (4) hours. · Ensure configuration management data is updated within one business day of any modification or update of infrastructure and the contractor shall report the updates/changes in their Monthly Status Reports · Monitor and assume responsibility of trouble tickets assigned to the Systems Administration branch, assign specific tickets for resolution, and prioritize tickets in line with organizational goals of maintaining 99% system availability rate. · Provide after-hours on-site support to respond to system/application malfunctions. The contractor shall have 2 hours after notification of an issue to respond to the workplace. Bison Group is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by applicable law. Requirements · Ten years of progressively responsible experience in server administration, including supporting and managing servers in a production environment. · Five years of experience identifying and analyzing server requirements; planning the design and deployment of new technologies and upgrades · Five years of experience applying industry best practices on Windows Server 2016 and later operating systems encompassing configuration, implementation, and security · Ten years of experience on server administration in Microsoft (MS) Windows environments, including MS Windows Server 2019/2022 and later configuration to include performance monitoring, tuning, and making recommendations to improve overall system performance and application efficiency · Four years of experience managing Microsoft Active Directory, DNS, DHCP · Three years of experience serving as a team leader working as both part of a team and independently to assign/review immediate tasks, set priorities, maintain task progress, validate team members work consistent with the organizational goals and deadlines. · Five years of experience mentoring junior personnel on proper practices and procedures. · Five years of experience in server administration applying systems patches and STIGs on a Microsoft (MS) Windows Server 2019/2022 and later. · Four years of experience using PowerShell and other scripting languages to automate common and repeating tasks. Clearance Required: · TS/SCI clearance with SBI and ability to attain SI, TK, G, HCS, and NATO Secret clearance. Minimum Education: High School Minimum Years of Experience: 10 Years Required Certifications: · DoD 8140.03 IAT Level II/Intermediate certification (Security+) · A current Windows certification is required because Windows 2019 servers are in use and we are moving to the cloud. Various certifications will be considered during the interview process including Windows Server 2016/2019 Certification or Microsoft Certified Azure Administrator Associate or Windows Server Hybrid Administrator Associate. These repalace Microsoft Certified Solutions Associate (MSCA). Preferred: · AWS · Experience with Agile/Scrum development. · Experience with JIRA task tracking. · Bachelor’s degree

Responsibilities

The Sr. Microsoft System Administrator will support the identification and resolution of IT hardware and software issues, ensuring a high system availability rate. Responsibilities include server administration, applying security updates, conducting system upgrades, and maintaining documentation.